Definition:Quadrilateral/Dart/Deltoid

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This page is about Deltoid in the context of Plane Geometry. For other uses, see Deltoid.

Definition

A deltoid is a dart such that:

the $2$ sides which are adjacent to the reflex angle are equal to each other
the other $2$ sides are also equal to each other.


Darts.png

In the above diagram, the figure on the right is a deltoid.


Also known as

Some sources use the term dart to refer to a deltoid.


Also see


Sources